Dies for making eyelets



UNTTTD STnTns PATENT TTTcs.

GEORGE O. SCHNELLER, OF ANSONIA, CONNECTICUT.

DIES FOR MAKING EYELETS.

SPECIFICATION forming part of Letters Patent No. 234,690, dated November 23, 1880.

Application filed May 13, 1878.

To all whom t may concern Be it known that I, GEO. O. SOHNELLER, of Ansonia, in the county oi' New Haven and State of Connecticut, have invented a new Improvement in Dies for Making Eyelets and I do hereby declare the following, when taken in connection with the accompanying' drawings and the letters of reference marked thereon, to be a t'ull, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a plan view ot' the lower part ofthe die; Fig. 2, a plan v'iew oi' the upper part of the die; Fig. 3, a longitudinal section; Fig. 4, a transverse section.

This invention relates to an improvement in dies for the manufacture ot' eyelets and similar articles made from sheet metal, the object ofthe invention being to make the eyelets froin a strip of sheet metal by means of several series of dies and punches, each series extending transversely across the sheet; and the invention consists in the dies for making the eyelets, as hereinafter described.

In Fig. 1 the lower die is shown. It consists of a metal block having several series of depressions, ab c d, &c., with several depressions in each series. These depressions correspond to the work which is to be done-as, for instance, there being ,several operations necessary to complete the eyelet, the depressions will correspond to the rst operation.

Fig. 2 illustrates the other part of the die. This consists of a block of metal provided with projections a b o d', Ste., corresponding to the depressions of the other part, and so that when thc dies come together the thin sheet of metal placed between the two will be forced, by the projections on the one part, into the depressions or cavities in the other. If such operation be made on a strip of metal and it be fed along for a second striking or operation, the depressions first made must go beyond the last series of depressions in the die. Hence if made in the usual manner of constructing dies there will be a space between the impressions made at each operation, and

a consequent waste of metal. Hence in such work heretofore the metal has been cut into pieces corresponding to the dies, and each piece fed to the dies.

In my improved dies I make upon the two opposite edges of the part in which are the depressions part depressions in the same relation to the last series ot' depressions as that has to the next preceding, and so that when the strip of metal that has been struck is fed forward the last series of projections in the strip willi'all into the halt' cavities or depressions on that side of the dies and properly locate the strip for the next operation, and so on, each successive several series which are struck in the strip being advanced until the last series lie in the said half-depressions in the die. The first strikingl of the first series in the strip therefore necessitates only depressions on that edge of the die from which the strip passes; but on the second operation or the second time the stripis passed through, the corresponding half-depressions are required on the opposite edge, hence depressions are made on both edges. (See Fig. 1.) Incase, then, that a single operation is only required, the half-depressions on the edge of the die into which the strip is fed may be dispensed with. I therefore do not wish to be linderstood as limiting this invention to depressions on both edges.

This invention enables the finishing of the eyelets complete in the sheet.

I claim- The herein-described dies for making eyelets, consisting ot' the one part constructed with several series ot" depressions, a b cd, and part depressions at the edge in the same relative position to the whole depressions of the irst series that the depressions ot' that series bear to the next series, and a second part constructed with projections corresponding to the depressions, substantially as specified.

GEO. O. SGHNELLER. Witnesses:

JOHN E. EARLE, H. A. KITSON. 

